We are working on an LED dimmer circuit which supports DALI2.0 Interface. We already received the hardware and working on software only. LED driver circuit is based TPS92515HV and below is the circuitry
But the issue is LED flickers when dimming below 3%. There is no Voltage-Current stability below 3%. Is it a problem with analog dimming. Hardware designers went to analog dimming decision after experimenting on both analog and PWM dimming and found PWM more prone to flickering. I'm not sure whether they have tried shunt FET dimming. What is the actual reason behind this issue and how to get rid of this?